So I’ve been rocking the Adobe suite on work macs for a while, and am running Ubuntu on all my computers at home so I want to get invested/familiarized with GIMP. What’s the best place to start?

I want to learn all the basics of GIMP and be able to effectively navigate the UI. The Photoshop transition is proving challenging.

Also, similar information on learning Inkscape and Scribus would be useful. Thanks!